<?php

namespace App\Actions\ProjectBoard;

use App\Models\Project;
use App\Models\TicketStatus;
use Illuminate\Support\Facades\DB;
use Illuminate\Validation\ValidationException;

class DeleteTicketStatus
{
    use ManagesTicketStatusPositions;

    /**
     * @return array{context_label: string, deleted_name: string}
     */
    public function handle(Project $project, TicketStatus $ticketStatus): array
    {
        $ticketStatus->load('boardColumn');
        $boardColumnId = $ticketStatus->board_column_id;

        if ($this->statusContextQuery($project, $boardColumnId)->count() <= 1) {
            throw ValidationException::withMessages([
                'ticket_status_id' => "{$this->statusContextLabel($ticketStatus)} needs at least one ticket status.",
            ]);
        }

        $deletedName = $ticketStatus->name;
        $contextLabel = $this->statusContextLabel($ticketStatus);

        DB::transaction(function () use ($boardColumnId, $project, $ticketStatus): void {
            $replacementStatus = $this->statusContextQuery($project, $boardColumnId)
                ->whereKeyNot($ticketStatus->id)
                ->firstOrFail();

            $ticketStatus->tickets()->update([
                'ticket_status_id' => $replacementStatus->id,
            ]);

            $ticketStatus->delete();

            $this->normalizeStatusPositions($project, $boardColumnId);
        });

        return [
            'context_label' => $contextLabel,
            'deleted_name' => $deletedName,
        ];
    }
}